JPS5829570Y2 - socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a socket having a structure in which fluid flux or the like does not adhere to the contact surfaces of contacts and cause accidents such as poor contact.

Sockets used to mount components such as ICs on circuit boards are usually made of an elastic metal plate and have two contacts, one of which forms a contact portion that contacts the terminal of the IC, and the other that forms a pin terminal portion. It consists of an insulating housing with a contact chamber inside which the contacts are installed, but the flux or solder that comes into contact when the socket is soldered to the circuit board is used for later cleaning. The solvent enters the housing by capillary action through the through hole of the pin terminal provided in the bottom of the socket, and further diffuses through the gap between the contact and the wall surface of the contact chamber, causing contact between the contacts. They may adhere to movable parts due to their elasticity, causing accidents such as poor contact or stuck contacts.

As a countermeasure, a method has been used to fill the pin terminal through hole on the bottom of the socket with a synthetic resin agent and seal the gap in that area. However, like the flux mentioned above, there was a risk that it would enter the inside of the housing and cause the same accident as mentioned above.

This invention was developed to solve the above-mentioned causes of accidents, and although it has a simple structure, it prevents accidents caused by flux, solvents, synthetic resins, etc. (hereinafter referred to as flux, etc.) that have entered the inside of the housing. The purpose is to provide a socket that can prevent

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a contact, and FIG. 2 is a sectional view of a portion of the socket 1, showing a state in which the contact 2 is installed in a contact chamber 4 of a housing 3.

The pin terminal 5 of the contact 2 passes through the terminal through hole 6 of the housing 3 and projects to the bottom surface of the socket 1.

Further, one end of the contact 2 has a substantially elliptical spring portion 9 formed by curved portions 7 and 8 at both ends, and furthermore, the vicinity of the free end of the spring portion 9 is shallowly curved toward the inside of the spring portion and has a protrusion. The protruding portion forms a contact portion 11 that makes electrical connection with a terminal such as an IC that is inserted by contacting a support portion 10 in the middle portion of the contact.

As shown in FIG. 2, cavities 13, 14 and 15 are provided at locations where the contact 2 and the inner wall surface of the contact chamber 4 are in contact with each other and are connected to the terminal through hole 6.

Note that the recess 12 provided on the bottom of the housing is a place where a synthetic resin material for sealing the terminal through hole 6 is filled.

Since the socket according to the present invention is constructed as described above, flux, etc. that have entered the housing 3 through the gap between the pin terminal 5 and the terminal through hole 6 will first be transferred to the pin terminal 5, the spring portion 9, and the contact chamber. Most of it accumulates in the terminal space 13 formed between the terminal part and the wall surface.

The spring portion 9 is continuous with the support portion 10 of the contact 2.
The connecting portion 16, which is bent so as to be in close contact with one of the curved portions 7, is further extended to become a pin terminal that passes through the terminal through hole of the housing, but it has entered between the connecting portion 16 and the inner wall surface of the contact chamber 4. The remaining flux, etc. accumulates in the upper space 14 between the support part 10 and the inner wall surface and is no longer diffused, so that it does not adhere to the contact part 11.

On the other hand, flux and the like that have entered between the spring part 9 and the inner wall surface of the housing accumulate in the spring part cavity 15 and are also prevented from spreading elsewhere.

In the socket of the present invention, as in this case, a hollow space is provided in the part where the contact 2 and the inner wall surface of the contact chamber 4 are in contact with each other and is connected to the terminal through hole, so that flux, etc. that have entered the inside of the housing can It is extremely effective because it does not adhere to movable parts or the like and cause accidents such as poor contact or stuck contacts.

It goes without saying that the present invention is not limited to the above-described embodiments, and that various modifications can be made within the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of a contact used in the socket of the present invention, and FIG. 2 is a sectional view of a portion of the socket showing a state in which the contact is attached. DESCRIPTION OF SYMBOLS 1... Socket, 2... Contact, 3... Housing, 4... Contact chamber, 6... Terminal through hole,
13...Terminal space, 14...Upper space, 15...
・Spring part empty space.

Claims (1)

[Scope of utility model registration request] a nearly elliptical spring portion having a protrusion at its free end and curved portions at both ends; a support portion that is continuous with the spring portion and comes into contact with the protrusion to form a contact portion; and a support portion that is continuous with the support portion. A contact is provided in the housing, and the contact includes a connecting part bent so as to come into close contact with one curved part of the spring part, and a pin terminal extending from the connecting part and penetrating the terminal through hole of the housing. 1. A socket housed in a chamber, characterized in that a portion is provided where the contact and the inner wall surface of the contact chamber are in contact with each other and are connected to a terminal through hole.